The tower, as it is currently preserved, is made of regular masonry, with ashlar corners with rope and brand, and at the same time domestic dwellings have been attached to it. It must have been the keep of a small but strong castle that fulfilled relatively important military functions throughout the 13th and 14th centuries: it acted as a stronghold of Calatrava power in the Marteña countryside and was the protagonist in bloody battles like the one that popular tradition It is attributed between the King of Castile and the King of Granada in 1431. It consisted of two floors, of which the lower one remains, with a narrow access door with a semicircular arch made up of large voussoirs, which contrast with the reduced size, for reasons security, the entrance shaft. This door, a window and the remains of another arch are the few significant elements that can still be seen. It was declared a Site of Cultural Interest in 1985.